%I #5 Apr 04 2021 00:08:16
%S 54,5104,811538
%N Smallest number that is the sum of three positive n-th powers in three ways.
%H R. Alter, <a href="https://doi.org/10.1007/BFb0096461">Computations and generalizations on a remark of Ramanujan</a>, pp. 182-196 of "Analytic Number Theory (Philadelphia, 1980)", ed. M. I. Knopp, Lect. Notes Math., Vol. 899, 1981.
%e a(2) = 54 = 1+4+49 = 4+25+25 = 9+9+36.
%Y Cf. A230563, A342894-A342903.
%K nonn,bref,more
%O 2,1
%A _N. J. A. Sloane_, Apr 03 2021